US20050142344A1 - Laser test card - Google Patents
Laser test card Download PDFInfo
- Publication number
- US20050142344A1 US20050142344A1 US10/744,127 US74412703A US2005142344A1 US 20050142344 A1 US20050142344 A1 US 20050142344A1 US 74412703 A US74412703 A US 74412703A US 2005142344 A1 US2005142344 A1 US 2005142344A1
- Authority
- US
- United States
- Prior art keywords
- laser
- layers
- test card
- laser test
- ink
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M5/00—Duplicating or marking methods; Sheet materials for use therein
- B41M5/24—Ablative recording, e.g. by burning marks; Spark recording
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M5/00—Duplicating or marking methods; Sheet materials for use therein
- B41M5/26—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used
- B41M5/34—Multicolour thermography
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S428/00—Stock material or miscellaneous articles
- Y10S428/913—Material designed to be responsive to temperature, light, moisture
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
- Y10T428/24802—Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.]
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
- Y10T428/24942—Structurally defined web or sheet [e.g., overall dimension, etc.] including components having same physical characteristic in differing degree
- Y10T428/2495—Thickness [relative or absolute]
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
- Y10T428/24942—Structurally defined web or sheet [e.g., overall dimension, etc.] including components having same physical characteristic in differing degree
- Y10T428/2495—Thickness [relative or absolute]
- Y10T428/24967—Absolute thicknesses specified
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
- Y10T428/24942—Structurally defined web or sheet [e.g., overall dimension, etc.] including components having same physical characteristic in differing degree
- Y10T428/2495—Thickness [relative or absolute]
- Y10T428/24967—Absolute thicknesses specified
- Y10T428/24975—No layer or component greater than 5 mils thick
Definitions
- the present invention relates to laser system test and set-up apparatus, in particular, to laser test material which change in appearance according to incident laser radiation.
- the critical alignment of laser systems focuses primarily on output beam power and energy distribution across the output beam width (beam dispersion).
- Prior measurement is primarily performed with electronic measurement equipment interposed between the laser and its target.
- electronic measurement equipment interposed between the laser and its target.
- testing and/or alignment measurement is simply avoided as long as the system is apparently functional, not being measured to see how close to marginal performance the laser may be.
- the beam intensity may cause accidental injury to a careless technician, inappropriate application of the beam for medical procedures or industrial manufacturing processes, and if measurement is not convenient, such laser monitoring and servicing is avoided due to personal safety concerns.
- the laser test card according to the present invention comprises a thin planar multi-layer material, which may be cut to a desired size, is exposed to a beam directed to the laser test card top surface from a laser under test, and reveals successive visually contrasting layers from the top surface down to the supporting board according to the incident laser beam energy at that particular point or any point of the X or Y dimension (i.e. shape) of the beam.
- a thin planar multi-layer material which may be cut to a desired size, is exposed to a beam directed to the laser test card top surface from a laser under test, and reveals successive visually contrasting layers from the top surface down to the supporting board according to the incident laser beam energy at that particular point or any point of the X or Y dimension (i.e. shape) of the beam.
- several different layers of sharply differently colors of high contrast are used.
- the laser test card so constructed and used provides a beam energy profile across its width as well as an indication of its approximate energy.
- the present invention provides a quick, easy, safe and inexpensive laser and laser system test device giving a relative energy distribution within the beam.
- FIG. 1 is an enlarged plan view of a typical laser test card according to the present invention after exposure to a laser under test;
- FIG. 2 is an elevation view of a cross section the laser test card of FIG. 1 showing the various layers thereof and the effect of the incident laser radiation.
- the laser test card 50 is shown in FIG. 1 , having a typical laser exposure pattern 51 thereon.
- an exemplary laser test card comprises 4 different colored layers, including an optional black top layer, and successively underlying blue, yellow and red layers deposited on a carrier board (not shown). Also not visible in FIG. 1 are individual clear layers which may be deposited between each adjacent pair of colored layers.
- the pattern 51 is shown for a beam from a laser at 1,064 nm wavelength and 100 mW beam power. The illustration of the pattern 51 is larger than actually produced, that being approximately 0.3 inches across.
- FIG. 2 A more structurally revealing, cross-section view of the laser test card 50 is provided in FIG. 2 , wherein the supporting board 52 , may comprise a variety of material being largely a matter of choice as long as it is compatible with the overlaying layers and provides the desired physical (rigidity, easily cut, etc.) characteristics.
- the board 52 comprises an 80 pound paper.
- the first layer 54 is a red layer of printer's ink, e.g. red #MP-103 ink made by Dezyne MP series, deposited with a selected thickness, such as 0.00025 inches in this typical embodiment.
- the next layer 55 A comprises a clear ink, e.g. #MP-135 made by Dezyne MP series deposited on the red layer 54 .
- a yellow layer 56 is deposited 0.00025 inches thick comprising a yellow #MP-132 ink made by Dezyne MP series, and again covered by a clear ink layer 55 B.
- a blue layer 57 (blue #MP-906 manufactured by Dezyne MP series is then deposited 0.00025 inches thick over the preceding clear layer, to be followed by another clear layer 55 C.
- the clear layers are also 0.00025 inches thick.
- An optional final black ink layer 58 of (black #MP-111 manufactured by Dezyne MP series of 0.00025 inches thickness is deposited over the preceding clear layer 55 C.
- An alternate embodiment has ink layers 54 - 58 of 0.0007714 inch thickness for the ink types described.
- the thickness of the inks may be varied anywhere with in the range of 0.00025 to 0.0007714 to provide the desired power indications, that is, the thicker (or more radiation resistant) the layer receiving the beam energy, the greater the range of power needed to reveal the underlying layer color, pattern, etc. Further embodiments of the present invention envision one or more layer thicknesses in the range 0.0001 to 0.010 inch.
- pattern 51 is highly revealing of the laser output beam energy and beam distribution.
- pattern 51 is asymmetric.
- a more pronounce beam “edge” or rapid intensity change (vs-distance) is demonstrated from the right of the section line 2 by the closer spacing of bands of the different colors.
- a region of highest laser beam intensity 53 is indicated as centered approximately within a red region of FIG. 1 (reveal portion of the red layer 54 ).
- a more gradual reduction in laser energy can be seen to the left of the section line 2 , indicating a more unfocussed beam.
- variations in laser power-vs-time e.g. Amplitude Modulation, beam turn-on or turn-off characteristics
- the ink thicknesses are approximately equal and of approximately equal responsiveness (for evaporation or other removal mechanism) to laser energy, yielding a substantially linear laser energy to number-of-colors interpretation.
- Alternate embodiments include variations in thickness, color and/or material to yield an energy responsiveness to provide a desired energy to number-of-color (e.g. logarithmic).
- the above exemplary embodiments comprise layers of common inks, while further embodiments also comprise one or more layers of different materials, e.g. metallic, fast-drying, slow-drying inks and inks or materials deposited without separation layers (i.e. 55 A-C).
- the mechanism in which the layers are reduced and eliminated in response to incident laser beam radiation includes, but is not limited to, vaporization, evaporation, chemical change, and combustion.
- the materials are deposited in the embodiments of FIGS. 1 and 2 by printing, screening, vapor deposition, and other deposition methods currently available for the materials deposited.
Abstract
Description
- The present invention relates to laser system test and set-up apparatus, in particular, to laser test material which change in appearance according to incident laser radiation.
- The critical alignment of laser systems focuses primarily on output beam power and energy distribution across the output beam width (beam dispersion). Prior measurement is primarily performed with electronic measurement equipment interposed between the laser and its target. Obviously, in systems having a laser integrated therein, it is often not convenient or even possible to insert measurement or alignment equipment. In some systems, testing and/or alignment measurement is simply avoided as long as the system is apparently functional, not being measured to see how close to marginal performance the laser may be. Moreover, with more powerful lasers, the beam intensity may cause accidental injury to a careless technician, inappropriate application of the beam for medical procedures or industrial manufacturing processes, and if measurement is not convenient, such laser monitoring and servicing is avoided due to personal safety concerns.
- The laser test card according to the present invention comprises a thin planar multi-layer material, which may be cut to a desired size, is exposed to a beam directed to the laser test card top surface from a laser under test, and reveals successive visually contrasting layers from the top surface down to the supporting board according to the incident laser beam energy at that particular point or any point of the X or Y dimension (i.e. shape) of the beam. In the preferred embodiment, several different layers of sharply differently colors of high contrast are used.
- Accordingly, the laser test card so constructed and used provides a beam energy profile across its width as well as an indication of its approximate energy. Thus, the present invention provides a quick, easy, safe and inexpensive laser and laser system test device giving a relative energy distribution within the beam.
- These and further features of the present invention will be better understood by reading the following Detailed Description together with the Drawing, wherein
-
FIG. 1 is an enlarged plan view of a typical laser test card according to the present invention after exposure to a laser under test; and -
FIG. 2 is an elevation view of a cross section the laser test card ofFIG. 1 showing the various layers thereof and the effect of the incident laser radiation. - The laser test card 50 according to the present invention is shown in
FIG. 1 , having a typicallaser exposure pattern 51 thereon. In the embodiment 50, an exemplary laser test card comprises 4 different colored layers, including an optional black top layer, and successively underlying blue, yellow and red layers deposited on a carrier board (not shown). Also not visible inFIG. 1 are individual clear layers which may be deposited between each adjacent pair of colored layers. Thepattern 51 is shown for a beam from a laser at 1,064 nm wavelength and 100 mW beam power. The illustration of thepattern 51 is larger than actually produced, that being approximately 0.3 inches across. - A more structurally revealing, cross-section view of the laser test card 50 is provided in
FIG. 2 , wherein the supportingboard 52, may comprise a variety of material being largely a matter of choice as long as it is compatible with the overlaying layers and provides the desired physical (rigidity, easily cut, etc.) characteristics. In the present embodiment ofFIG. 2 , theboard 52 comprises an 80 pound paper. Thefirst layer 54 is a red layer of printer's ink, e.g. red #MP-103 ink made by Dezyne MP series, deposited with a selected thickness, such as 0.00025 inches in this typical embodiment. Thenext layer 55A comprises a clear ink, e.g. #MP-135 made by Dezyne MP series deposited on thered layer 54. Over theclear layer 55A, ayellow layer 56 is deposited 0.00025 inches thick comprising a yellow #MP-132 ink made by Dezyne MP series, and again covered by aclear ink layer 55B. A blue layer 57 (blue #MP-906 manufactured by Dezyne MP series is then deposited 0.00025 inches thick over the preceding clear layer, to be followed by another clear layer 55C. In this embodiment, the clear layers are also 0.00025 inches thick. An optional finalblack ink layer 58 of (black #MP-111 manufactured by Dezyne MP series of 0.00025 inches thickness is deposited over the preceding clear layer 55C. An alternate embodiment has ink layers 54-58 of 0.0007714 inch thickness for the ink types described. Moreover, the thickness of the inks may be varied anywhere with in the range of 0.00025 to 0.0007714 to provide the desired power indications, that is, the thicker (or more radiation resistant) the layer receiving the beam energy, the greater the range of power needed to reveal the underlying layer color, pattern, etc. Further embodiments of the present invention envision one or more layer thicknesses in the range 0.0001 to 0.010 inch. - Returning to the
laser exposure pattern 51 ofFIG. 1 , the two-dimensional image ofpattern 51 is highly revealing of the laser output beam energy and beam distribution. For instance,pattern 51 is asymmetric. A more pronounce beam “edge” or rapid intensity change (vs-distance) is demonstrated from the right of thesection line 2 by the closer spacing of bands of the different colors. A region of highest laser beam intensity 53 is indicated as centered approximately within a red region ofFIG. 1 (reveal portion of the red layer 54). By contrast, a more gradual reduction in laser energy can be seen to the left of thesection line 2, indicating a more unfocussed beam. Moreover, if the incident laser beam is “scanned” across the laser test card 50, variations in laser power-vs-time (e.g. Amplitude Modulation, beam turn-on or turn-off characteristics) may be demonstrated. - In the embodiment 50 of
FIGS. 1 and 2 , the ink thicknesses are approximately equal and of approximately equal responsiveness (for evaporation or other removal mechanism) to laser energy, yielding a substantially linear laser energy to number-of-colors interpretation. Alternate embodiments include variations in thickness, color and/or material to yield an energy responsiveness to provide a desired energy to number-of-color (e.g. logarithmic). - Moreover, the above exemplary embodiments comprise layers of common inks, while further embodiments also comprise one or more layers of different materials, e.g. metallic, fast-drying, slow-drying inks and inks or materials deposited without separation layers (i.e. 55A-C). Also, the mechanism in which the layers are reduced and eliminated in response to incident laser beam radiation includes, but is not limited to, vaporization, evaporation, chemical change, and combustion. Furthermore, the materials are deposited in the embodiments of
FIGS. 1 and 2 by printing, screening, vapor deposition, and other deposition methods currently available for the materials deposited. - Modifications and substitutions by one of ordinary skill in the art are within the scope of the present invention, which is not to be limited except by the claims which follow.
Claims (13)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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US10/744,127 US7803454B2 (en) | 2003-12-24 | 2003-12-24 | Laser test card |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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US10/744,127 US7803454B2 (en) | 2003-12-24 | 2003-12-24 | Laser test card |
Publications (2)
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US20050142344A1 true US20050142344A1 (en) | 2005-06-30 |
US7803454B2 US7803454B2 (en) | 2010-09-28 |
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US10/744,127 Expired - Fee Related US7803454B2 (en) | 2003-12-24 | 2003-12-24 | Laser test card |
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Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20080077198A1 (en) * | 2006-09-21 | 2008-03-27 | Aculight Corporation | Miniature apparatus and method for optical stimulation of nerves and other animal tissue |
US20080221559A1 (en) * | 2007-03-06 | 2008-09-11 | Phuoc Khanh Nguyen | Calibration and Quality Assurance System For Use With Ophthalmic Surgical Devices and Associated Methods |
US7736382B2 (en) | 2005-09-09 | 2010-06-15 | Lockheed Martin Corporation | Apparatus for optical stimulation of nerves and other animal tissue |
US7883536B1 (en) | 2007-01-19 | 2011-02-08 | Lockheed Martin Corporation | Hybrid optical-electrical probes |
US8012189B1 (en) | 2007-01-11 | 2011-09-06 | Lockheed Martin Corporation | Method and vestibular implant using optical stimulation of nerves |
US8160696B2 (en) | 2008-10-03 | 2012-04-17 | Lockheed Martin Corporation | Nerve stimulator and method using simultaneous electrical and optical signals |
US8498699B2 (en) | 2008-10-03 | 2013-07-30 | Lockheed Martin Company | Method and nerve stimulator using simultaneous electrical and optical signals |
US8652187B2 (en) | 2010-05-28 | 2014-02-18 | Lockheed Martin Corporation | Cuff apparatus and method for optical and/or electrical nerve stimulation of peripheral nerves |
US8929973B1 (en) | 2005-10-24 | 2015-01-06 | Lockheed Martin Corporation | Apparatus and method for characterizing optical sources used with human and animal tissues |
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US8709078B1 (en) | 2011-08-03 | 2014-04-29 | Lockheed Martin Corporation | Ocular implant with substantially constant retinal spacing for transmission of nerve-stimulation light |
US8945197B1 (en) | 2005-10-24 | 2015-02-03 | Lockheed Martin Corporation | Sight-restoring visual prosthetic and method using infrared nerve-stimulation light |
US8956396B1 (en) | 2005-10-24 | 2015-02-17 | Lockheed Martin Corporation | Eye-tracking visual prosthetic and method |
US8475506B1 (en) | 2007-08-13 | 2013-07-02 | Lockheed Martin Corporation | VCSEL array stimulator apparatus and method for light stimulation of bodily tissues |
US8996131B1 (en) | 2006-09-28 | 2015-03-31 | Lockheed Martin Corporation | Apparatus and method for managing chronic pain with infrared light sources and heat |
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Cited By (15)
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---|---|---|---|---|
US8985119B1 (en) | 2005-09-09 | 2015-03-24 | Lockheed Martin Corporation | Method and apparatus for optical stimulation of nerves and other animal tissue |
US7736382B2 (en) | 2005-09-09 | 2010-06-15 | Lockheed Martin Corporation | Apparatus for optical stimulation of nerves and other animal tissue |
US8929973B1 (en) | 2005-10-24 | 2015-01-06 | Lockheed Martin Corporation | Apparatus and method for characterizing optical sources used with human and animal tissues |
US20080077198A1 (en) * | 2006-09-21 | 2008-03-27 | Aculight Corporation | Miniature apparatus and method for optical stimulation of nerves and other animal tissue |
US20080077200A1 (en) * | 2006-09-21 | 2008-03-27 | Aculight Corporation | Apparatus and method for stimulation of nerves and automated control of surgical instruments |
US7988688B2 (en) | 2006-09-21 | 2011-08-02 | Lockheed Martin Corporation | Miniature apparatus and method for optical stimulation of nerves and other animal tissue |
US8012189B1 (en) | 2007-01-11 | 2011-09-06 | Lockheed Martin Corporation | Method and vestibular implant using optical stimulation of nerves |
US7883536B1 (en) | 2007-01-19 | 2011-02-08 | Lockheed Martin Corporation | Hybrid optical-electrical probes |
US20080221559A1 (en) * | 2007-03-06 | 2008-09-11 | Phuoc Khanh Nguyen | Calibration and Quality Assurance System For Use With Ophthalmic Surgical Devices and Associated Methods |
US8160696B2 (en) | 2008-10-03 | 2012-04-17 | Lockheed Martin Corporation | Nerve stimulator and method using simultaneous electrical and optical signals |
US8498699B2 (en) | 2008-10-03 | 2013-07-30 | Lockheed Martin Company | Method and nerve stimulator using simultaneous electrical and optical signals |
US8652187B2 (en) | 2010-05-28 | 2014-02-18 | Lockheed Martin Corporation | Cuff apparatus and method for optical and/or electrical nerve stimulation of peripheral nerves |
US8792978B2 (en) | 2010-05-28 | 2014-07-29 | Lockheed Martin Corporation | Laser-based nerve stimulators for, E.G., hearing restoration in cochlear prostheses and method |
US8864806B2 (en) | 2010-05-28 | 2014-10-21 | Lockheed Martin Corporation | Optical bundle apparatus and method for optical and/or electrical nerve stimulation of peripheral nerves |
US8968376B2 (en) | 2010-05-28 | 2015-03-03 | Lockheed Martin Corporation | Nerve-penetrating apparatus and method for optical and/or electrical nerve stimulation of peripheral nerves |
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